docs: def postprocess_WC(self, entry):
          """
          Parse WC keywords.
  
          Subject keywords are usually semicolon-delimited.
          """
  
          if type(entry.WC) not in [str, unicode]:
              WC= u' '.join([unicode(k) for k in entry.WC])
          else:
              WC= entry.WC
          entry.WC= [k.strip().upper() for k in WC.split(';')]